🚽 Switch to pkgsrc on Darwin
I've had enough of Homebrew. I want a real package manager that can remove unneeded dependencies. neovim still isn't in pkgsrc, so download binaries of that separately for now.
Hopefully I haven't broken any other systems by rewriting install.sh like this.
https://code.causal.agency/june/src/commit/5560f675c5c28e7ea2efdb44e6f38699a297c106